1 /* 2 * Thunderbolt Cactus Ridge driver - control channel and configuration commands 3 * 4 * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com> 5 */ 6 7 #ifndef _TB_CFG 8 #define _TB_CFG 9 10 #include "nhi.h" 11 12 /* control channel */ 13 struct tb_ctl; 14 15 typedef void (*hotplug_cb)(void *data, u64 route, u8 port, bool unplug); 16 17 struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, hotplug_cb cb, void *cb_data); 18 void tb_ctl_start(struct tb_ctl *ctl); 19 void tb_ctl_stop(struct tb_ctl *ctl); 20 void tb_ctl_free(struct tb_ctl *ctl); 21 22 /* configuration commands */ 23 24 #define TB_CFG_DEFAULT_TIMEOUT 5000 /* msec */ 25 26 enum tb_cfg_space { 27 TB_CFG_HOPS = 0, 28 TB_CFG_PORT = 1, 29 TB_CFG_SWITCH = 2, 30 TB_CFG_COUNTERS = 3, 31 }; 32 33 enum tb_cfg_error { 34 TB_CFG_ERROR_PORT_NOT_CONNECTED = 0, 35 TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2, 36 TB_CFG_ERROR_NO_SUCH_PORT = 4, 37 TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */ 38 TB_CFG_ERROR_LOOP = 8, 39 }; 40 41 struct tb_cfg_result { 42 u64 response_route; 43 u32 response_port; /* 44 * If err = 1 then this is the port that send the 45 * error. 46 * If err = 0 and if this was a cfg_read/write then 47 * this is the the upstream port of the responding 48 * switch. 49 * Otherwise the field is set to zero. 50 */ 51 int err; /* negative errors, 0 for success, 1 for tb errors */ 52 enum tb_cfg_error tb_error; /* valid if err == 1 */ 53 }; 54 55 56 int tb_cfg_error(struct tb_ctl *ctl, u64 route, u32 port, 57 enum tb_cfg_error error); 58 struct tb_cfg_result tb_cfg_reset(struct tb_ctl *ctl, u64 route, 59 int timeout_msec); 60 struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer, 61 u64 route, u32 port, 62 enum tb_cfg_space space, u32 offset, 63 u32 length, int timeout_msec); 64 struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, void *buffer, 65 u64 route, u32 port, 66 enum tb_cfg_space space, u32 offset, 67 u32 length, int timeout_msec); 68 int tb_cfg_read(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, 69 enum tb_cfg_space space, u32 offset, u32 length); 70 int tb_cfg_write(struct tb_ctl *ctl, void *buffer, u64 route, u32 port, 71 enum tb_cfg_space space, u32 offset, u32 length); 72 int tb_cfg_get_upstream_port(struct tb_ctl *ctl, u64 route); 73 74 75 #endif 76